"""tests/test_media_sources.py — source_list, source and native select_source (t47).

The last piece a universal-media-player replacement needs from this integration:
a dropdown of the apps (``source_list``), an answer to "what is on screen"
(``source``), and a way to pick one (``media_player.select_source``). All three read
the SAME app directory — the user's Apps map, else the curated default — so the
dropdown cannot offer a name the launch path cannot resolve.

The t44 rule still holds: a configured ``select_source`` script takes precedence,
because selecting a source can be more than launching an app. Without one, the name
resolves back to its package and goes out over the shared ``play_media("app", …)``
path; an unknown name is a translated error, never a silent no-op.
"""

import entity_stublib
import pytest
from nsh.const import CONF_APP_NAME_MAP, CONF_COMMAND_SCRIPTS, SCRIPT_VAR_APP_NAME
from test_command_routing import make_player

TIVIMATE = "ar.tvplayer.tv"
SCRIPT = "script.shield_source"


@pytest.fixture(name="modules", autouse=True)
def scoped_modules():
    """Stub scope + loaded entity modules for one test (t7 discipline)."""
    snapshot = entity_stublib.snapshot_modules()
    entity_stublib.install()
    try:
        yield entity_stublib.load_entity_modules()
    finally:
        entity_stublib.restore_modules(snapshot)


def _player(modules, *, app_map=None, scripts=None, foreground=None):
    player, served, _intents = make_player(modules)
    if app_map is not None:
        player._entry.options[CONF_APP_NAME_MAP] = app_map
    if scripts is not None:
        player._entry.options[CONF_COMMAND_SCRIPTS] = scripts
    if foreground is not None:
        player._manager._on_current_app(foreground)
    return player, served


class TestSourceList:
    """The dropdown: friendly names, in a stable order, from the one directory."""

    def test_it_comes_from_the_apps_map(self, modules):
        player, _served = _player(
            modules,
            app_map={"com.custom.one": "One", "com.custom.two": "Two"},
        )

        assert player.source_list == ["One", "Two"]  # map order, not shuffled

    def test_it_falls_back_to_the_curated_directory(self, modules):
        player, _served = _player(modules)  # no map configured

        assert player.source_list == ["TiviMate", "Wholphin", "Netflix", "YouTube"]

    def test_a_blank_name_never_reaches_the_dropdown(self, modules):
        """t49: the map is hand-editable, so 'com.x=' must not offer an empty entry.

        An empty entry is worst than useless: it is a dropdown item that
        select_source has to reject as an unknown source.
        """
        player, _served = _player(
            modules,
            app_map={
                "com.blank": "",
                TIVIMATE: "TiviMate",
                "com.spaces": "   ",
                "com.netflix.ninja": "Netflix",
            },
        )

        assert player.source_list == ["TiviMate", "Netflix"]
        assert "" not in player.source_list

    async def test_the_list_matches_the_browse_titles_exactly(self, modules):
        """Same accessor, same order, same bytes — a blank entry excepted (t49)."""
        for app_map in (
            None,  # the curated default
            {"ar.tvplayer.tv": "TiviMate", "com.netflix.ninja": "Netflix"},
        ):
            player, _served = _player(modules, app_map=app_map)

            root = await player.async_browse_media()

            assert player.source_list == [child.title for child in root.children]

    async def test_the_survivors_still_resolve_and_launch(self, modules):
        """The filter must not cost a resolvable name (t49)."""
        player, _served = _player(
            modules,
            app_map={"com.blank": "", TIVIMATE: "TiviMate", "com.blank2": "  "},
        )

        for name in player.source_list:
            assert player._source_package(name) is not None

        await player.async_select_source("TiviMate")

        assert player._manager._protocol.launch_calls == [TIVIMATE]
        # the blank entries are not selectable, and never launch
        assert player._source_package("") is None
        assert player._source_package("   ") is None

    def test_every_offered_name_resolves_to_a_package(self, modules):
        """The invariant the shared directory buys: no name without a destination.

        t51 extends it to the hand-edited shapes: blanks, padded names and two
        entries normalizing to one name all still leave only resolvable offers.
        """
        for app_map in (
            None,
            {"com.custom.one": "One"},
            {
                "com.blank": "",
                "com.blank.package": "   ",
                TIVIMATE: "  TiviMate  ",
                "com.a": "Netflix",
                "com.b": "  Netflix  ",
                "": "Ghost",
            },
        ):
            player, _served = _player(modules, app_map=app_map)

            for name in player.source_list:
                assert player._source_package(name) is not None, name


class TestSource:
    """`source` is the foreground app's resolved name — the app_name chain."""

    def test_it_resolves_through_the_apps_map(self, modules):
        player, _served = _player(
            modules, app_map={TIVIMATE: "TiviMate"}, foreground=TIVIMATE
        )

        assert player.source == "TiviMate"
        assert player.source == player.app_name  # one truth, not two

    def test_it_uses_the_cached_device_label_when_unmapped(self, modules):
        player, _served = _player(modules, foreground="com.netflix.ninja")
        player._manager.cache_app_label("com.netflix.ninja", "Netflix")

        assert player.source == "Netflix"

    def test_it_falls_back_to_the_raw_package(self, modules):
        player, _served = _player(modules, foreground="com.unknown.app")

        assert player.source == "com.unknown.app"

    def test_it_is_unknown_when_nothing_has_reported(self, modules):
        player, _served = _player(modules)

        assert player.source is None


class TestSelectSource:
    """Picking a source: script first, else the native launch, else an error."""

    async def test_a_name_launches_its_package(self, modules):
        player, served = _player(
            modules, app_map={TIVIMATE: "TiviMate", "com.netflix.ninja": "Netflix"}
        )

        await player.async_select_source("TiviMate")

        assert player._manager._protocol.launch_calls == [TIVIMATE]
        assert served == []  # no script was configured, and nothing else left

    async def test_the_curated_names_launch_too(self, modules):
        player, _served = _player(modules)

        await player.async_select_source("Netflix")

        assert player._manager._protocol.launch_calls == ["com.netflix.ninja"]

    async def test_a_raw_package_and_any_case_are_accepted(self, modules):
        player, _served = _player(
            modules, app_map={TIVIMATE: "TiviMate", "com.netflix.ninja": "Netflix"}
        )

        await player.async_select_source(TIVIMATE)
        await player.async_select_source("tivimate")
        await player.async_select_source("  NETFLIX  ")

        assert player._manager._protocol.launch_calls == [
            TIVIMATE,
            TIVIMATE,
            "com.netflix.ninja",
        ]

    async def test_a_configured_script_still_wins(self, modules):
        player, served = _player(
            modules,
            app_map={TIVIMATE: "TiviMate"},
            scripts={"select_source": SCRIPT},
        )

        await player.async_select_source("TiviMate")

        assert served == [
            (
                "script",
                "turn_on",
                {"entity_id": SCRIPT, "variables": {SCRIPT_VAR_APP_NAME: "TiviMate"}},
            )
        ]
        assert player._manager._protocol.launch_calls == []  # native path untouched

    async def test_an_unknown_name_raises_a_translated_error(self, modules):
        from homeassistant.exceptions import ServiceValidationError

        player, _served = _player(modules, app_map={TIVIMATE: "TiviMate"})

        with pytest.raises(ServiceValidationError) as raised:
            await player.async_select_source("Not An App")

        assert raised.value.translation_domain == "nvidia_shield"
        assert raised.value.translation_key == "unknown_source"
        assert raised.value.translation_placeholders == {"source": "Not An App"}
        assert player._manager._protocol.launch_calls == []  # nothing was sent

    async def test_an_empty_name_is_an_error_too(self, modules):
        from homeassistant.exceptions import ServiceValidationError

        player, _served = _player(modules)

        with pytest.raises(ServiceValidationError):
            await player.async_select_source("   ")


class TestAdvertisedFeatures:
    """HA routes a service by its feature flag, so the flag has to be honest."""

    def test_a_source_list_advertises_select_source(self, modules):
        from homeassistant.components.media_player import MediaPlayerEntityFeature

        player, _served = _player(modules)

        assert player.supported_features & MediaPlayerEntityFeature.SELECT_SOURCE

    def test_a_script_advertises_it_even_with_no_directory(self, modules, monkeypatch):
        from homeassistant.components.media_player import MediaPlayerEntityFeature

        player, _served = _player(modules, scripts={"select_source": SCRIPT})
        monkeypatch.setattr(type(player), "_app_directory", property(lambda self: {}))

        assert player.supported_features & MediaPlayerEntityFeature.SELECT_SOURCE

    def test_neither_means_it_is_not_offered(self, modules, monkeypatch):
        from homeassistant.components.media_player import MediaPlayerEntityFeature

        player, _served = _player(modules)
        monkeypatch.setattr(type(player), "_app_directory", property(lambda self: {}))

        assert not player.supported_features & MediaPlayerEntityFeature.SELECT_SOURCE

    def test_select_source_is_not_gated_on_the_volume_set_script(self, modules):
        """The two script-only commands stay independent."""
        from homeassistant.components.media_player import MediaPlayerEntityFeature

        player, _served = _player(modules, scripts={"volume_set": "script.volume"})

        assert player.supported_features & MediaPlayerEntityFeature.VOLUME_SET
        assert player.supported_features & MediaPlayerEntityFeature.SELECT_SOURCE


class TestNormalizedDirectories:
    """t51: a hand-edited map is normalized ONCE, in the shared accessor.

    The two residuals t49 left share one cause — `_app_directory` handed the raw map
    out, so the Browse tree showed a child with a blank title and the reverse lookup
    compared the user's padded name against itself. The policy now lives in that one
    accessor (strip names and keys, drop blanks, first-in-map-order wins a shared
    name) and is pinned here, together with the promise that a well-formed map is
    untouched.
    """

    BLANKED = {
        "com.blank": "",
        TIVIMATE: "TiviMate",
        "com.spaces": "   ",
        "": "Ghost",
    }

    async def test_a_blank_entry_never_reaches_the_browse_tree(self, modules):
        """The Browse tree and the dropdown are the same, resolved offer."""
        player, _served = _player(modules, app_map=dict(self.BLANKED))

        root = await player.async_browse_media()

        assert [child.title for child in root.children] == ["TiviMate"]
        assert [child.media_content_id for child in root.children] == [TIVIMATE]
        assert player.source_list == ["TiviMate"]

    async def test_a_blank_package_is_dropped_too(self, modules):
        """An entry with no package is a child that cannot be launched."""
        player, _served = _player(
            modules, app_map={"": "Ghost", "   ": "Ghost 2", TIVIMATE: "TiviMate"}
        )

        root = await player.async_browse_media()

        assert [child.media_content_id for child in root.children] == [TIVIMATE]
        assert player.source_list == ["TiviMate"]

    async def test_a_padded_name_is_stripped_once_and_then_resolves(self, modules):
        player, _served = _player(
            modules,
            app_map={TIVIMATE: "  TiviMate  ", "com.netflix.ninja": "Netflix"},
        )

        root = await player.async_browse_media()

        # display and match key are one string, everywhere
        assert player.source_list == ["TiviMate", "Netflix"]
        assert [child.title for child in root.children] == ["TiviMate", "Netflix"]
        # ...so every spelling the user may type finds the package
        assert player._source_package("TiviMate") == TIVIMATE
        assert player._source_package("  TiviMate  ") == TIVIMATE
        assert player._source_package("tivimate") == TIVIMATE

        await player.async_select_source("TiviMate")

        assert player._manager._protocol.launch_calls == [TIVIMATE]

    async def test_two_packages_with_one_name_keep_a_deterministic_winner(self, modules):
        """Both apps stay reachable; the NAME goes to the first in map order."""
        player, _served = _player(
            modules, app_map={"com.a": "Netflix", "com.b": "  Netflix  "}
        )

        root = await player.async_browse_media()

        # both are still offered in the tree, each by its own package id
        assert [(c.media_content_id, c.title) for c in root.children] == [
            ("com.a", "Netflix"),
            ("com.b", "Netflix"),
        ]
        # the dropdown offers the name once, and resolves to the first entry
        assert player.source_list == ["Netflix"]
        assert player._source_package("Netflix") == "com.a"

        await player.async_select_source("Netflix")

        assert player._manager._protocol.launch_calls == ["com.a"]

        # map order decides — the user's order, not chance
        swapped, _served_swapped = _player(
            modules, app_map={"com.b": "Netflix", "com.a": "Netflix"}
        )

        assert swapped._source_package("Netflix") == "com.b"

    async def test_a_wellformed_map_passes_through_unchanged(self, modules):
        """Stripping touches the EDGES: an inner space is part of the name."""
        player, _served = _player(
            modules, app_map={TIVIMATE: "TiviMate Pro", "com.netflix.ninja": "Netflix"}
        )

        root = await player.async_browse_media()

        assert player.source_list == ["TiviMate Pro", "Netflix"]
        assert [child.title for child in root.children] == ["TiviMate Pro", "Netflix"]
        assert player._source_package("TiviMate Pro") == TIVIMATE


class TestCaseInsensitiveNames:
    """t53: one row per NAME, compared case-insensitively — as the lookup does.

    The dropdown and the reverse lookup disagreed about case: two entries called
    `Dup` and `dup` survived an exact-match dedupe as two rows, while
    `_source_package` — case-insensitive by design (t47) — resolved BOTH to the
    first entry. So the second row launched the first entry's app: a row that lies
    about what it does, and the one shape here the editor can produce by itself.
    """

    async def test_names_differing_only_by_case_are_offered_once(self, modules):
        player, _served = _player(modules, app_map={"com.a": "Dup", "com.b": "dup"})

        # one row, keeping the first spelling the user typed
        assert player.source_list == ["Dup"]

        # ...and the Browse tree still holds both apps, each under its own id
        root = await player.async_browse_media()
        assert [(c.media_content_id, c.title) for c in root.children] == [
            ("com.a", "Dup"),
            ("com.b", "dup"),
        ]

    async def test_the_offered_row_launches_the_app_it_shows(self, modules):
        player, _served = _player(modules, app_map={"com.a": "Dup", "com.b": "dup"})

        await player.async_select_source(player.source_list[0])

        assert player._manager._protocol.launch_calls == ["com.a"]  # the row it shows

    async def test_the_shadowed_app_stays_reachable_by_id(self, modules):
        player, _served = _player(modules, app_map={"com.a": "Dup", "com.b": "dup"})

        assert player._source_package("com.b") == "com.b"

        await player.async_select_source("com.b")

        assert player._manager._protocol.launch_calls == ["com.b"]

        # the shadowed NAME still resolves to the one the list offers (first wins)
        assert player._source_package("dup") == "com.a"

    async def test_the_first_spelling_wins_in_map_order(self, modules):
        player, _served = _player(modules, app_map={"com.b": "dup", "com.a": "Dup"})

        assert player.source_list == ["dup"]

        await player.async_select_source("dup")

        assert player._manager._protocol.launch_calls == ["com.b"]

    async def test_a_mixed_map_offers_each_name_once(self, modules):
        player, _served = _player(
            modules,
            app_map={
                "com.a": "Dup",
                "com.b": "dup",
                "com.netflix.ninja": "Netflix",
                "com.google.android.youtube.tv": "netflix",
                TIVIMATE: "TiviMate Pro",
            },
        )

        assert player.source_list == ["Dup", "Netflix", "TiviMate Pro"]
        assert player._source_package("Netflix") == "com.netflix.ninja"

    def test_the_offered_list_never_repeats_a_name(self, modules):
        """The invariant behind the fix, over every map shape in this file."""
        for app_map in (
            None,
            {"com.a": "Dup", "com.b": "dup"},
            {"com.a": "Dup", "com.b": "DUP", "com.c": "dup"},
            {"com.blank": "", TIVIMATE: "  TiviMate  ", "com.a": "Netflix", "com.b": "netflix"},
        ):
            player, _served = _player(modules, app_map=app_map)
            folded = [name.casefold() for name in player.source_list]

            assert len(folded) == len(set(folded)), app_map
            assert len(folded) == len(player.source_list)

    def test_a_padded_map_value_is_displayed_verbatim_by_app_name(self, modules):
        """The README's boundary, pinned: the list cleans it, app_name does not.

        The name map is the user's own override, so it is used as typed — which is
        why `source` can be a string that is not in source_list.
        """
        player, _served = _player(
            modules, app_map={TIVIMATE: "  TiviMate  "}, foreground=TIVIMATE
        )

        assert player.source_list == ["TiviMate"]  # the dropdown cleans it
        assert player.source == "  TiviMate  "  # this surface shows it as typed
        assert player.source not in player.source_list

    def test_a_blank_map_value_falls_through_to_the_raw_package(self, modules):
        """Blanks are not displayed as nothing — the chain continues past them."""
        player, _served = _player(modules, app_map={TIVIMATE: ""}, foreground=TIVIMATE)

        assert player.source == TIVIMATE